Machine for making hollow ware from pulp.



APPLICATION FILED NOW I6. I9Ifi.

Patented Oct. 30, I917.

wlmgss ATTORNEYS drawings in whicharticle.

UNITED sT Tns JACKSON B. YOUNG, 0F

"ATE'N 1 OFFEIICE.

o iizmnn, cer monnm.

MACHINE FOR MAKING nonnow ivenn neon; PULP.

Sp e'cific'ation of LetterslPetent. 031;, 1917,

Application filed November 16,1816 een m1.- 181,783?

new and useful Improvements in MachinesfOr Making IJQHOWVRIB from Pulnof which the following is 2; Specification.

My invention relates to the class of nia chines for making hollow-Wareoi m0ldable material particularly of pu iier-mfieh or similar pulp.

The'objeet of the invention is to providea machine of simpleconstructionum! operation adapted for the nmnufaeture of articles frompul nespee ally conical shapes suitable for yarious uses, but especiallyfor milk bottles. r

To this end myinventionconsists in the novel machine which I shall nowfully describe, by referen e Figure 1 is an elevi tion, broken, of themachine, showing the jainermold liftedit'ronr the outer mold, and"fingers spread forthe fingers hei -11g omitted for the sake ofelearuess,,, Y is a vertical section, enlarged, of

cleansing efl'ect, some of,"

Fig. the outer mold and the yielding ends-abutm'ent', and showing theinner inoldiinwp'laceo forming-t the bottom ole- 1 e 1.9

Fig. 3 is a section on the line 3--3 of Fig.' 2. v

Fig. 4 is a detail section, enlarged, of one sideof the ad acenteoaetlng surfaces of the molds and abutment at the lower end, shon ingtheir effect in making 'the neck of the In Fig. 1, the frame 1 issurmounted by n pressine cylinder 2 which may stand: for and: indicateany suitable n'i eans fol-carry ing and operating'the inner mold. Thisis effected through the: tubular axis-rod of the inner mold, said rod oranextension 4- thereof passing up into the 'eylindel." itsshown by thedotted'lincs and having :1 pi-s ton 4 on its ufipejrend; l havenotdeenre it necessary .to show herein the fluidipres? sure connectionsof the cylinder these form no 'part of my inveutlon, the lllustraftloubeing ample 'to ind cate the essential factnf the recipi-oeativemovement .ohthe inner mold. The said inner mold is composed ofindependentfingeis suitably bevel.ed"to present when hin together incireumfereul ival seriesthe taper ngshape of an inverted truncated cone.'lh e heetls o of these fingers are straight, th'et'is non tap'er ing,xand they meet the ttipei'ed portions 011 a shoulder 5 The upper ends.ofthe heads 5 are beveled; nth, The fiiiger s'hrecon- 60. nee-tedwiththe axis-rod '3 by a collar onsaid rods On'this eol larlthe he ids5" of 't-he fingers freely T fulcrum foirg swinging movement, and theyare eneireled'hy a sp1:i1-1 g.8,-the tendency of i'iliieliis to hold thefingersfiin taper-mold shii'pe. l

'9 are snfiports eariied by theii xis-i'odji, and against whichthe"fingei's bear' heir; tQgU-HIQI',515 86611 in Fig; 2. flThe"lowermost4 support 9 isimp'erfdrat and serves a olosureiortheinner-lrioldendjblnt the olher supports are perforated, as shown at 1j0,' fordrainage of the excluded Whter sui-plus from the 'mate1'-ia1, into thehe] low rod' 3 through holes lll fifiill r d- .7 1: 1 11sihee ll erinothe lower end ofth m ne 1 end; has: th tapening shepe' of M [h -ri d Uned cone, e0. 'esponding to thefunctionalshape, Uruminner mold; The fewt' he e mq mold is eylindrieel QDL I IIAEYE 'foot sleeve' 1'3]. Fi d 3 0and r l. r in the-cylindrical- 15001512 of" 1e outer mold, "is theunnulae'yiel'dingend-abutment 14."

spu'ee. It is supported bye ring- 15, l e-ark ing between the headoft'h'e nh'utiment and the foot sleeve 13;: The guidest in 14 of,thBfll-illtlllellt pzissesdo'wn'th r gh thesleeve r and said 'stemiszidzl' ted to h 'hloscdhy .th'g 9i) plug-extension the j siod 3 ofthe" .inner mojldfa's win-be presently described; a e The upper rageofthe Yielding ena-abmnent 14 ;isfoied with ti, 'h'hhetlT i b out its;

a fixed "contact sleeve :18 for spreading the fingers 0 ftheinner'moId.f" On' top o ftfhe woutenmoldis the cylindriezilentensiong19, which ooa 'ets' Wit-h. tliefstraight he id portions k l '5of the: inner mo1dfinge'rs"'to impose stlireet.clowriwerd'pressure on mpof the inn-i 'lheiopiarption of the n'iachine isg as foh, 1l'ows-:='-When ithe parts are in the p0sition contact With the" sleeve13 ha 'veiben spread I in 'ordee to clear "thei'n of' iin'y ioerticles'of zadheringmeterielif iich'clin'gi to them 'l.he inner moldjisinoy-loweied;"andin nie- I "Al lately by breaking-the I I *edge. Under thehaseof the' cylilnler 2 islet the top of said extension 19, until it,fills 19 and-outer mold 11.

'' sufiicient' volume be present, t

the outer mold and said extension. Then the inner mold descends into theextension Until the shoulder 5 of the inner-mold head reaches the top ofthe extension 19, the fluidic contents dis-. placed by theentering moldoverflows, if

I he top ofsaid extension. The holding capacity of the outer mold l1 andheadextension 19 and the displacement of the inner mold are soproportioned that when the shoulder-5 of the inner mold head reaches thetop of the extension" 19, there will remain in'xthe' outer mold justenough pulp to make the product intended. The lower end of the innermold being closed by the imperforate bottom suppart9, said mold will, asit continues down, force the pulp to fill the space between the twomolds, all the way up to the descending shoulder 5". As the descentcontinues, the mold space gradually grows thinner and shapes theproduct, the shoulder 5 pressing down upon and condensing the upper endof the product, and the end-abutment 14 below, shaping and condensingits other *end.; The whole pressure is complete when the head -shoulder5" reaches the'top of the tapered outer mold. The surplus water dur ingthis operation is squeezed inwardly between the mold-fingers 5 anddrains out through the perforated axis rod 3 and its opene'i'itledhollow-plug extension 16.

' In the operation, the end-abutment 14' yields downwardsufliciently tocause the pulp to' be pressed inwardly under the lower end ofthe moldfingers and also to follow down inthe straight foot 12 oftheouter its -whe a'haveit's" mold, thereby forming,- as shown in Fig; 4,

,a neck forthe molded'product 2%, qhicls neck comprises an inner flange2. and a cylindrical extension 21. Itinust beexplained that thearticlethus .formed is upside down for its use as a milkbottle, and,therefore, the end last described forms an efiicient neckfin which uponthe flange 20a cover I iay belaid. The other or la; end of the articleisof course open. ken from thej-machine, and must bottom applied .insomegmanner with which I am not herein concerned. When the molding is.complete, the inner mold is lifted out, and when the beveled extremities6 ofit s finger heads, reach the fixed cpntact sleeve 18 ,'the fingers 5are separately but in unison thrown outwardly as 'showndn 1 whichmovement efiecwhen withdrawn from spreadgthem apart.

- indivi outer mold structure only beaturned upside down asit would beif it were a unit'of a revolving system, the molded product will now, asis intended, the machine or the drop out by gravity; or if it beinclined to stick,- the spring abutment will release and positivelydischarge it. I have found,- in practice, thatthe inner mold formed asdescribed of a multiplicity of swinging fingers will not only. act as asieve to permit the passage of the excluded Water but Willalso act toadmit air to breaki the more or less intimate suction contact of thefingers and molded product, so that the mold may .be easily withdrawn. I

Very little, if any, particles of the material cling to the fingers whenwithdrau-n, but if such be present, the spreading of the fingers servesto detach them, so that the inner mold is always clean, a factor ofimportance in this work.

1. A. machine for the described purpose comprising a tapered outer.mold; and a tapered inner mold movable into and out of the outer mold,and formed of afcircumferential series of swinging fingers.

2. A machine for the described purpose comprising a tapered outer mold;a tapered inner mold movable. into and out of the outer mold, andcomposed of a circumferential series of swinging fingers; and means forspreading the fingers when withdrawn from the outer mold.

3. A machine for the described purpose comprising a tapered outer mold;a tapered inner mold movable into and out of the outer mold and composedof a circumferential series of swinging fingers; and res'ilient meansfor pressing the fingers together to taper-mold shape.

4. A machine for the described purpose com rising a tapered outer mold;a tapered inner 'mold movable into and out of the outer mold andcomposed ,of a circumferential series of swinging fin gcrs resilientmeans for pressing the fingers togetherto tapermold shape; .and meansacting on the fingers the outer mold to 5. A machine for the describedpurpose comprising a taperedouter mold; a tapered inner mold movableinto and out of the outer mold and composed" of a circumferential seriesof swin ing fingers; a drain rod in the-axis of-said inner mold; aconnection between said rod and the fingers of said' mold, upon which'cpnnection said fingers are I ually fulcnumedqand a spring encir-.

cling the fingers .6. machine for the describedv purpose comprising atapered outer-m ld; a tapered to ,PHGSS them together to taper-moldshape;

inner m ld movable into and out of the outer mold and composed of acircumferential serie-S of swinging fingers; a drain rod in the axis ofsaid inner mold; a connection between said rod and fingers'of said mold,upon which said connection said fingers are individually fulcrumed; aspring encircling the fingers to press them together to taper-moldshape; and means acting on the fingers to s read them apart whenwithdrawnfrom the outer mold.

7. A machine for the described purpose comprisin a tapered outer mold; atapered -1nnermol movable into and out of the'outer mold and composedof'a circumferential se; T185 ofswinging Ifingers; a hollow, open--ended rod with perforated walls, in the axis of the'inner mold; acollar on the, rod with which said fin ers. are pivotally connected; -aspring encirc ing the fingers to. press them together to taperimoldshape; and a fixed contact member acting on the upper ends of thefingersto spread them apart when withdrawn fromthe outcr' mold.

8: A machine for the described purpose comprising atapered'outer mold; atapered inner; moldmo'va'ble into and out of the --outer1n0ld andcomposed of a circumferen- -'t'ial series of swinging fingers, saidfingers having shouldered straiht head portions; and'fah cylindricalheatg extension of the outenfmold' coacting with the shouldered straight"head .portions -of the inner mold fingers to impose rssurepn top oi thematerial being molded.

9.- Ahriachine for the described purpose.

comprising a tapered outer mold; a tapered inner mold movable-into andout of the outer mold and composed of a circumferentialseries'ofsyvin'ging fingers, said fingers having shouldered straighthead portions; a spring encircling the fingers to hold them together'toltaper mold shape; and a cylindrical headextension of the" outer moldcoaeting with the shouldered head portions of the inner mold fingers toimpose pressure on top of the material being molded.

' "510. A machine for the described purpose eomprisinga tapered outermold; a tapered innermoldmovable into and out of the outer mold andcomposed of a circumferential series'of swinging fingers, said fingershav ing shouldered straight head P01110115; a

spring e'ncireling'tlie fingers to hold them I together to taper-moldshape; a cylindrical lu-a d extension of' the outer mold coacting withtheshouldered head portions of the inner mold fingers toimpose pressureon top of the iuaterialbeing molded; and means acting on the fingers tospread them apart when withdrawn from the outer mold.

11. A machine for the described purpose comprising a tapered outer mold;a tapered inner mold movable into the outer mold to compress thematerial the intervening cylindrical mold space; and a yiolda'bleabutment closing the foot of the mold space.

12. A machine for the described purpose comprising a tapered outer =moldhaviir a cylindrical foot; an inner mold monible into the outer mold tocompress the material in the intervening mold-space; and a yieldableabutment fitted in the cylindrical foot of the outer mold and closingthe mold space. A

13. A machine for the described purpose comprisin a. tapered outer moldhavin a cylindrica foot; an inner mold mova 1e ltO. the outer mold tocompress the material in the intervening mold-space; and a yieldableabutment fitted in the cylindrical foot of the outer mold and closin themold space,

said abutment having a re bet around the outer edge of its inner face.

14. A machine for the described purpose,

comprisin a tapered outer mold havin a foot; a spring-controlled slidingabutment seated'insaid foot and closing the mold-space; and a taperedinner mold movable into the outer mold to compress the material, saidinner mold being composed of a circumferential series of swin ingfingers.

15. A machine for the descri ed purpose comprlsin a tapered outer moldhaving a oylindrica foot; a sprin -controlled sliding abutment seated insaid Eoot and closing the mold-space; a tapered inner mold movable intothc outer mold to compress the material, said inner mold being composedof a cir cumferential series of swinging fingers, and

means for resilientl holding said fingers together in taper-moi shape.

16. A machine for the described purpose comprising a tapered outer moldharin r a o%lindrical foot; a spring-controlled sliding a utment seatedin said oot and closing the molcbspziee; a taperedinncr mold movableinto the outer mold to compress the material, said inner mold beingcomposed of a circumferential so ies of swinging fingers, means forresiliently holding said fingers together in taper-mold shape, and meansacting on the fingers to spread them apart when withdrawn from the outermold.

17. A machine for the described purpose comprising a tapered outer moldhaving a cylindrical foot; :1 spring-controlledslidingV abutment seatedin- 'said foot and closing the mold-space; said abutment having arabbetaround the outer ed e of its inner face; and a tapered inner 1110d movable into the outer mold to compress. the material, said inner moldbeing composed of a circumferential series of swinging ,ingers.

18. A machine for the described purpose comprising a tapered oute' mold;a tapered inner mold movable into the outer mold to compress thematerial in -the intervening mold space; a yieldable annularend-abutmeiit closing the foot of the mold space;

and a drain rod in the axis of and carrying the inner 'mold, said rodhaving a plug extension to close the annular end-abutment.

19( A machine for the described purpose con'nprising a tapered outermold; an annular spring controlled sliding abutment closing the foot ofthe mold space; a tapered lar spring controlled sliding abutment closingthe foot of the mold space; a tapered inner mold movable into the outermold to compress the material, said inner mold being composed of acirclunferential series of swinging fingers; a tubular drain rod in theaxis of said inner mold, said rod having a plug extension adapted toclose the annular abutment; a pivotal connection between saidrod andfingers; and means for holding said fingers together in taper-moldshape.

21. A machine for the described purpose comprising a tapered outer mold;an annular spring controlled sliding abutment closing the foot of themold space; a tapered inner mold movable into the outer mold to compressthe material, said inner mold being composed of a circumferential seriesof swinging fingers; a tubular drain rod in the axis of said inner mold,said rod having a plug extension adapted to close the annu-' lar abutmen""a pivotal connection between said rod and 'ngcrs; means for holdingsaid fingers together in taper-mold shape; and means acting on saidfingers to spread them apart, when withdrawn from the outer mold.

22. A machine for the described purpose comprising a tapered outer moldhaving a cylindrical foot; an annular spring controlled sliding abutmentseated in said foot and closing the mold space; a tapered inner moldmovable into the outer mold for-compressing function, said inner moldbeing composed of a circumferential series of swinging fingers, saidfingers having a straight portion forming a shouldered cylindrical headfor the inner mold; a tubular drain rod in the axis of said inner moldand to which the fingers are pivotally connected, said rod having a-pluextension adapted to close the annular a utment; a

cylii'uh'ieal foot; an annular spring con-'- trolled sliding abutmentseated in said foot and closing the mold space; said abutment having arabhet around the outer edge of its inner face; a tapered inner moldmov-:

able into the outer mold for compressin function, said inner mold beingcompose of a c1rcl'nnfeicntial series of swinging f1ngers, sa1d fingershaving a straight portion forming a shouldered cylindrical head for theinner mold; a tubular drain rod in the axis of said inner mold and towhich the fingers are pivotally connected, said rod having a plugextension adapted to close the annular abutment; a spring encirclingsaid fingers to hold them together in taper-mold shape; and acylindrical extension of the outer mold eoacting with the shoulderedcylindrical head of the inner mold to exert pressure on top of thematerial.

24. A. machine for the described purpose comprising a tapered outer moldhaving a cylindrical foot; an annular spring" controlled slidingabutmci'it seated in said 'foot and closing the mold space; a taperedinner mold movable into the outer mold'for compressing function, saidinner inold being composed of a circumferential series of swingingfingers, said fingers having a straight portion forming a shoulderedcylindrical head for the inner mold; atubular drain rod in tha axis ofsaid inner mold:

the shouldered cylindrical head of the inner mold t exert pressure ontop of the material; and means acting on said fingers to spreadthemapart when Withdrawn" from the outer mold.

In testimony whereof I'have signed my name to this specification m thepresence of two subscribing Witnesses.

JACKSON B. YOUNG.

Witnesses WM. F. Boo'rn, D. B; RICHARDS.

